<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>transition-property</title>
<style type="text/css">
*{
	margin: 0;
	padding: 0;
}
div { 
	width: 200px; 
	height: 200px; 
	margin: auto; 
	background: pink;
	transition-property:width;
	transition-duration:5s;
	/*transition-timing-function:cubic-bezier(.39,1.27,.65,-0.78);*/
}
div:hover { 
	cursor: pointer; 
	width: 600px; 
}
</style>
</head>
<body>
<div></div>
</body>
</html>